斜坡堤越浪量试验研究

Experimental research of wave overtopping on sloping dikes

研究斜坡堤的越浪量对于防波堤的设计有重要意义。通过波浪断面物理模型试验的方法,研究了波高、波陡和堤顶超高的变化对斜坡堤越浪量的影响规律,比较了4种不同护面形式的消浪效果。试验结果显示:斜坡堤越浪量随着有效波高的减小和波陡的增大而减少;斜坡堤越浪量随着堤顶超高的增大,成指数形式递减;护面形式对斜坡堤越浪量有一定影响,扭王字块和栅栏板的消浪效果差别不大,且均优于四角空心方块。将物模试验值与现有斜坡堤越浪量公式计算值进行对比,推荐了陈国平公式作为计算斜坡堤越浪量的公式。

The study of overtopping is of great importance to the design of sloping dikes.Through the physical model test,the influence of wave height,wave steepness and superelevation of embankment on the wave length of slope is studied and the effect of four different types of protection surface is compared.The results of the test show that:the overtopping of sloping dike decreases with the decrease of effective wave height and the increase of wave steepness;the wave of the slope increases with the rise of the top of the embankment and decreases exponentially;the protection form has certain influence on the wave length of the slope dike,and the effect of wave elimination between the accoropode and the barrier plate is not very different,and both are better than the four corners.Comparing the result of the physical model test and that calculated by the exiting formulas about the overtopping volume,Chen Guo-ping’s formula is recommended as the calculation formula for the wave overtopping on sloping dikes.